"On the Chemical Formula of Phosphoric Acid"

The principle of chemistry is infinite, and the composition of matter is explained by the chemical formula. Phosphoric acid, its chemical formula is $H_3PO_3 $.

Looking at this chemical formula, hydrogen ($H $) has three, phosphorus ($P $) is one, and oxygen ($O $) is the third. Hydrogen, the original substance of light gas, is very active. Phosphorus, in chemical changes, often shows its unique properties. Oxygen, the essential substance of combustion, is indispensable.

In phosphoric acid, hydrogen can participate in many chemical reactions in the form of ions, and can combine with alkalis to form salts and water. In phosphorus, its valence state can rise or fall between reactions, changing from side to side. Oxygen, by virtue of its strong oxidation, cooperates with phosphorus and hydrogen to form phosphoric acid.

It is widely used in the field of chemical industry. It can be used as a raw material to make other compounds; or in the reaction, it can be used as a catalyst to change the rate of chemical reactions and promote their efficiency and order.

The chemical formula of phosphoric acid is not only a collection of symbols, but also the key to unlocking its chemical mysteries. By studying it, the essence of chemistry can be gradually obtained.